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Basic Information
| CAS No.: | 75-74-1 | |
|---|---|---|
| Name: | Tetramethyllead | |
| Article Data: | 57 | |
| Molecular Structure: | ||
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| Formula: | C4H12 Pb | |
| Molecular Weight: | 267.339 | |
| Synonyms: | Lead,tetramethyl- (6CI,7CI); Tetramethyllead; Tetramethylplumbane | |
| EINECS: | 200-897-0 | |
| Density: | 1.3 g/mL at 25 °C | |
| Melting Point: | -27.5 ºC | |
| Boiling Point: | 110 ºC | |
| Flash Point: | 37.7 ºC | |
| Solubility: | insoluble | |
| Appearance: | colourless liquid | |
| Hazard Symbols: | Flammable, moderate fire risk. Toxic by ingestion, inhalation, and skin absorption. Lower explosion level 1.8%. TLV: 0.15 mg(Pb)/m3. Toxic by skin absorption. | |
| Risk Codes: | 61-10-26/27/28-33-38-50/53-62 | |
| Safety: | Poison by ingestion, intraperitoneal, parenteral, and intravenous routes. Moderately toxic by skin contact. An experimental teratogen. Experimental reproductive effects. Lead and its compounds have dangerous central nervous system effects. A flammable liquid and very dangerous fire hazard when exposed to heat, flame, or oxidizers. Moderate explosion hazard in the form of vapor when exposed to flame. May explode when heated above 90°C. Explosive reaction with tetrachlorotrifluoromethyl phosphorane. Can react vigorously with oxidizing materials. To fight fire, use water, foam, CO2, dry chemical. When heated to decomposition it emits toxic fumes of Pb. Used as an octane enhancer for gasoline. See also LEAD COMPOUNDS. | |
Analytical Methods: | For occupational chemical analysis use NIOSH: Tetramethyl Lead (as Pb), 2534. |
|
| Transport Information: | UN 1649 | |
| PSA: | 0.00000 | |
| LogP: | 1.95440 | |
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Tetramethyllead
Chemistry
TETRAMETHYL LEAD has the Molecular Formula of C4H12Pb and the Molecular Weight of 267.35.The Melting Point, Boiling Point and Flash Point are respectively -27.5 oC,110 oC and 37.7 oC.TETRAMETHYL LEAD is the insoluble and colourless liquid.
Toxicity Data With Reference
| 1. | orl-rat LD50:105 mg/kg | MELAAD Medicina del Lavoro. Industrial Medicine. 54 (1963),486. | ||
| 2. | ipr-rat LD50:90 mg/kg | MELAAD Medicina del Lavoro. Industrial Medicine. 54 (1963),486. | ||
| 3. | ivn-rat LD50:88 mg/kg | MELAAD Medicina del Lavoro. Industrial Medicine. 54 (1963),486. | ||
| 4. | par-rat LD50:105 mg/kg | AOHYA3 Annals of Occupational Hygiene. 3 (1961),226. | ||
| 5. | ihl-mus LC50:8500 mg/m3/30M | 85JCAE Prehled Prumyslove Toxikologie; Organicke Latky Marhold, J.,Prague, Czechoslovakia.: Avicenum,1986,1258. | ||
| 6. | orl-rbt LDLo:24 mg/kg | SAIGBL Sangyo Igaku. Japanese Journal of Industrial Health. 15 (1973),3. | ||
| 7. | skn-rbt LDLo:3391 mg/kg | SAIGBL Sangyo Igaku. Japanese Journal of Industrial Health. 15 (1973),3. | ||
| 8. | ivn-rbt LDLo:90 mg/kg | JPETAB Journal of Pharmacology and Experimental Therapeutics. 38 (1930),161. |
Consensus Reports
EPA Extremely Hazardous Substances List. Lead and its compounds are on the Community Right-To-Know List. Reported in EPA TSCA Inventory.
Safety Profile
Poison by ingestion, intraperitoneal, parenteral, and intravenous routes. Moderately toxic by skin contact. An experimental teratogen. Experimental reproductive effects. Lead and its compounds have dangerous central nervous system effects. A flammable liquid and very dangerous fire hazard when exposed to heat, flame, or oxidizers. Moderate explosion hazard in the form of vapor when exposed to flame. May explode when heated above 90°C. Explosive reaction with tetrachlorotrifluoromethyl phosphorane. Can react vigorously with oxidizing materials. To fight fire, use water, foam, CO2, dry chemical. When heated to decomposition it emits toxic fumes of Pb. Used as an octane enhancer for gasoline. See also LEAD COMPOUNDS.
Analytical Methods:
For occupational chemical analysis use NIOSH: Tetramethyl Lead (as Pb), 2534.
Standards and Recommendations
OSHA PEL: TWA 0.075 mg(Pb)/m3 (skin)
ACGIH TLV: TWA 0.15 mg(Pb)/m3 (skin)
DFG MAK: 0.05 mg/m3
ACGIH TLV: TWA 0.15 mg(Pb)/m3 (skin)
DFG MAK: 0.05 mg/m3
Analytical Methods
For occupational chemical analysis use NIOSH: Tetramethyl Lead (as Pb), 2534.
Specification
Moreover,there are some Hazard Symbols:flammable, moderate fire risk. TETRAMETHYL LEAD is toxic by ingestion, inhalation, and skin absorption. The lower explosion level is 1.8% and TLV is 0.15 mg(Pb)/m3.
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